operation in darfur operation in gaza operation in progress operation in somalia operation in syria operation in the world operation includes operation indicator operation information operation instruction operation instructions operation interface operation involves operation involving operation iraqi freedom operation is based operation is called operation is carried operation is carried out operation is complete operation is completed operation is conducted operation is controlled operation is done operation is finished operation is generally operation is going operation is in progress operation is indicated operation is known operation is necessary operation is needed operation is not possible operation is over operation is performed operation is referred operation is repeated operation is required operation is scheduled operation is set operation is shown operation is similar operation is subject operation is successful operation is the same operation is underway operation is used operation ivy operation just operation just cause operation lamp operation last operation lasted operation launched operation led operation life operation lifeline operation lifesaver operation linebacker operation made operation maintenance operation make operation makes operation management operation manager operation manual operation manuals operation market garden operation may operation member operation menu operation method operation might operation mode operation model operation modes operation mongoose operation more operation must operation must be performed operation neptune operation new operation next operation northwoods operation not operation now operation occurs operation of a motor operation of a wind operation of air operation of aircraft operation of circuit operation of control operation of device operation of electrical operation of electronic operation of equipment operation of gas operation of law